The ZX Spectrum +3e is a replacement ROM for the ZX Spectrum +3 which fixes several bugs, improves the BASIC, and introduces support for hard drives and compact flash cards. It was created by Garry Lancaster, and its homepage is [1].

Extended eXtended Disk Parameter Block

The +3e has an "extended XDPB" based on the +3DOS XDPB. The data is ordered as follows